Volume 53, Issue 112, January 2007, Pages 1-16
R.M.A. KHALIFA; AMANY I. HAMZA; M.I. ARAFA; NEVEEN A. EL-NISR; WAFAA G. MAHMOED
Volume 51, Issue 104, January 2005, Pages 1-11
MAHA S. SHAHEEN; AMANY I. HAMZA; SALMA M. ABDEL-RAHMAN